abstract |
Novel N-substituted aniline and diphenylamine compounds that inhibit the PDE4 enzyme, Embedded image R 1 is methyl or CHF 2 , R 2 is cyclopentyl, R 3 is heteroarylalkyl, substituted or unsubstituted in each case, R 4 is substituted or unsubstituted aryl or hetero Aryl. |